Hi. I need help with these questions.
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Answer 16 and 17

Step-by-step explanation:

16

Let the roots be p and q

The sum and product of the roots:

The sum of the roots, considering p = 2q,

And

The product of the roots, considering p = 2q:

And

Substitute q with -b/(3a)

17.

Quadratic equation

Equal roots means the discriminant is zero:

the required function is .

step-by-step explanation:

from the given table it is noticed that the graph passing through (-3,7), (0,4), (3,1) and (8,-4).

it is a linear function because the value of y is decrease by one as the value of x increase by 1.

the slope of the function is

the slope of the function is -1 and the y-intercept is 4.

the slope intercept form is

where, m is slope and b is y-intercept.

therefore the required function is . the graph of this function is shown below.